is going to be totally self-sufficient on energy. people believe in shale gas. other people say that the rates are enormous and yet the oil price doesn't seem to be coming down because of it. which one is it? is it a genuine story or is it -- which one is it? >> it's always complicated, isn't it? i think it's a mix of things. on the gas side of thing, they've seen phenomenal growth. the problem is, oil is a slightly different story. but both the oil and decline rates are phenomenal after literally a few days, the decline rate goes down from 50% to 80%. so you need to keep trimming a huge number of rates. it's very, very expensive. i definitely don't buy the argument that the u.s. is going to be independent by an x number of dates, no. there are lots of problems. infrastructure is massively messed up at the moment. pipelines go another way, oil production going another way. refineries, heavy crude, lots of issues to deal with. i think in terms of why isn't lower gas prices impacting oil, gas and oil don't interact these days very much. oil is a transportation thi